Figure 2

Previous hypotheses that position extant river dolphins, including Pontoporia , relative to other living odontocete lineages. Continued from Figure 1. Topologies based on molecules (P-Z) are shown. River dolphin lineages are colored red, and other branches are blue. Groupings that are commonly replicated in the various trees are labeled 1-9. For each topology, the following are shown: authors, date of publication, mode of analysis (ML = maximum likelihood, NJ = neighbor joining distance, Bayes = Bayesian analysis), and data examined (mitochondrial [mt] genes, nuclear [nu] genes, mt genomes, AAs = amino acids).